Regular polygons can be divided up into triangles of equal sizes. For example, a pentagon would have 5 triangles. Each would have one angle with a value of 72 degrees and two angles of 54 degrees.
What are the names, if anything, of those 72 and 54 degree angles?
I know for a polygon with five sides the name of the 108 degree angle is the "interior angle", and am looking for the name of the other two.